Abstract
Behavior of an air flow around a permeable porous plate placed perpendicularly on a heated ground plane was experimentally investigated with the aid of a laser Doppler velocimetry. The experiment was performed for three kinds of porous metal plate with different porosity and permeability. From mean streamlines around porous plate, we found that a recirculation region moved to downstream with increasing in permeability and disappeared for the highest permeability. In addition, temperature measurements were also conducted to assess a local Nusselt number. The Nusselt number distributions along the streamwise direction showed that a heat transfer was enhanced just behind the porous plate because of the air flow permeation. At the highest permeability, abovementioned phenomenon was remarkably observed, but increasing in Nusselt number due to the effect of reattachment of flow did not occur.
